Question: Prove that f(S)=sSmin{dis(s,s):sSs} is not a submodular function. Hint: find a counterexample

Prove that f(S)=sSmin{dis(s,s):sS\s} is not a submodular function. Hint: find a

Prove that f(S)=sSmin{dis(s,s):sS\s} is not a submodular function. Hint: find a counterexample

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